<template>
<!--下方的缩略图-->
    <div class="swiper-container "  ref="myswiper">
        <div class="swiper-wrapper" >
            <div class="swiper-slide"  v-for="(item,index) in carousel" :key="item.id">
                <img :class="{active:currIndex==index}" @click="setIndex(index,item.imgUrl)" :src="item.imgUrl" />
            </div>
        </div>

        <!-- 如果需要导航按钮 -->
        <div class="swiper-button-prev prev"></div>
        <div class="swiper-button-next next"></div>
    </div>
     
</template>
<script>
import Swiper from 'swiper'
export default {
    data(){
        return{
            currIndex:0
        }
    },
    mounted(){
        new Swiper(this.$refs.myswiper,{
            slidesPerGroup:1,
            slidesPerView : 3,
            loop: true, // 循环模式选项
    
            // 如果需要前进后退按钮
            navigation: {
                nextEl: '.swiper-button-next',
                prevEl: '.swiper-button-prev',
            },
            // 如果需要滚动条
            scrollbar: {
                el: '.swiper-scrollbar',
             },
            
         }) 
    },
    props:['carousel'],
    methods:{
        setIndex(index,imgUrl){
            this.currIndex=index
            this.$emit('setImg',imgUrl)
        }
    }
}
</script>
<style lang="less" scoped>
.swiper-container {
  height: 56px;
  width: 412px;
  box-sizing: border-box;
  padding: 0 12px;

  .swiper-slide {
    width: 56px;
    height: 56px;

    img {
      width: 100%;
      height: 100%;
      border: 1px solid #ccc;
      padding: 2px;
      width: 50px;
      height: 50px;
      display: block;

      &.active {
        border: 2px solid #f60;
        padding: 1px;
      }
    }
  }

  .swiper-button-next {
    left: auto;
    right: 0;
  }

  .swiper-button-prev {
    left: 0;
    right: auto;
  }

  .swiper-button-next,
  .swiper-button-prev {
    box-sizing: border-box;
    width: 12px;
    height: 56px;
    background: rgb(235, 235, 235);
    border: 1px solid rgb(204, 204, 204);
    top: 0;
    margin-top: 0;
    &::after {
      font-size: 12px;
    }
  }
}
</style>